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Table 2 Types of drug administration errors related to drug ATC classification

From: Evaluation of drug administration errors in a teaching hospital

Drug ATC*

Number of TOE (column%)

Number of errors (column%)

Number of TOE† with errors (column%)

Error rate‡

A

270 (18.0)

90 (20.9)

86 (20.7)a

31.8%

B

201 (13.4)

38 (9.5)

38 (9.2)

18.9%

C

425 (28.3)

89 (20.7)

87 (21.0)b

20.5%

D

8 (0.5)

7 (1.7)

7 (1.7)

87.5%

G

26 (1.7)

6 (1.5)

6 (1.4)

23.1%

H

40 (2.7)

18 (4.2)

16 (3.9)c

40.0%

J

150 (10.0)

55 (12.8)

50 (12.0)d

33.3%

L

22 (1.5)

3 (0.7)

3 (0.7)

13.6%

M

13 (0.9)

1 (0.2)

1 (0.2)

7.7%

N

279 (18.6)

96 (22.3)

94 (22.7)e

33.7%

R

36 (2.4)

15 (3.7)

15 (3.6)

41.7%

S

10 (0.7)

6 (1.5)

6 (1.4)

60.0%

V

16 (1.1)

4 (1.0)

4 (1.0)

25.0%

Others

5 (0.3)

2 (0.5)

2 (0.5)

40.0%

All

1501

430

415

27.6%

  1. * ATC classification detailed in additional file
  2. † TOE: Total Opportunities for Errors
  3. ‡ Error rate = Number of TOE with errors/Number of TOE
  4. a 4 administrations with two types of errors (Wrong time error + Wrong drug-preparation error: 3, Wrong drug-preparation error + Wrong administration technique error: 1)
  5. b 2 administrations with two types of errors (Wrong time error + Unauthorized drug error: 1, Wrong time error + Wrong administration technique error: 1)
  6. c 2 administrations with two types of errors (Wrong time error + Other medication error: 1, Wrong dose error + Other medication error: 1)
  7. d 3 administrations with two types of errors (Wrong time error + Wrong dosage-form error: 1, Wrong dose error + Wrong drug-preparation error: 1, Wrong drug-preparation error + Wrong administration technique error: 1), 1 administration with three types of errors (Wrong time error + Unauthorized drug error + Wrong drug-preparation error)
  8. e 2 administrations with two types of errors (Wrong time error + Wrong dose error: 1, Wrong time error + Wrong dosage-form error: 1)